/**
 * Licensed to Inspektr under one or more contributor license
 * agreements. See the NOTICE file distributed with this work
 * for additional information regarding copyright ownership.
 * Inspektr licenses this file to you under the Apache License,
 * Version 2.0 (the "License"); you may not use this file
 * except in compliance with the License. You may obtain a
 * copy of the License at:
 *
 * http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing,
 * software distributed under the License is distributed on
 * an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
 * KIND, either express or implied. See the License for the
 * specific language governing permissions and limitations
 * under the License.
 */

package com.sunkey.log.common.spi;

import org.aspectj.lang.JoinPoint;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

import com.sunkey.log.common.web.ClientInfo;
import com.sunkey.log.common.web.ClientInfoHolder;

/**
 * Default implementation that gets it from the ThreadLocal.
 * 
 * @author Scott Battaglia
 * @version $Revision$ $Date$
 * @since 1.0
 *
 */
public final class DefaultClientInfoResolver implements ClientInfoResolver {
	
	private final Logger log = LoggerFactory.getLogger(getClass());

	public ClientInfo resolveFrom(final JoinPoint joinPoint, final Object retVal) {
		final ClientInfo clientInfo = ClientInfoHolder.getClientInfo();
		
		if (clientInfo != null) {
			return clientInfo;
		}
		
		log.warn("No ClientInfo could be found.  Returning empty ClientInfo object.");
		
		return ClientInfo.EMPTY_CLIENT_INFO;
	}
}
